JPH01210725A - High frequency heating device - Google Patents

Abstract

PURPOSE:To perform a cooking operation in compliance with its object by a method wherein a high frequency transmitter is applied as a heating source, either a turn table or an agitating container is mounted in a heating chamber and at the same time a transmission driving part is arranged. CONSTITUTION:A low speed rotating is applied by a transmission driving part 16 when a turn table is used and a stand-still state is applied when an agitation container 12 is used. An agitating vane 14 is rotated at a high speed and a combination of an agitation with a high frequency heating enables a uniform cooking without any irregular heating to be carried out. In addition, a filling material 41 and a water-proof plate 50 are arranged at an outer circumference of a first driving shaft 17 so as to prevent juice dropped from a through-pass hole at a bottom surface of a heating chamber 1 from entering a sliding part of a bearing A28, so that a seizure of a driving shaft 17 caused by the seizure of juice may not occur and then the device may endure a use of long period of time. Since a silicone adhesive agent having a high viscosity is applied as a filling material, as adhering operation may easily be performed in such a way as the filling material 41 may not flow into the sliding part.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high frequency heating device having a food hiding function.

2. Prior Art A conventional high-frequency heating device of this type was developed in U.S. Pat.
This is proposed in Publication No. 89. In this configuration, a container is removably attached to a turntable that is rotatably provided in a heating chamber, and a stirring blade provided inside the container is removably attached to a fixed shaft that passes through the rotation axis of the turntable. It is.

Problems to be Solved by the Invention According to the above configuration, the stirring blade is stationary and the container itself, which is attached to the turntable, rotates. If you try to use high-frequency heating (fast rotation), the object to be heated will fly out due to inertia.Therefore, the rotation speed of the turntable during normal high-frequency heating is limited to 5 to 6 rpm, and there is a problem that sufficient stirring performance cannot be obtained. Ta.

Means for Solving the Problems The present invention has been made to solve the above problems, and includes a high-frequency oscillator as a heating source, a turntable on which an object to be heated is placed, and a stirring blade rotatably built in. Either one of the stirring containers is selectively placed in the heating chamber, and the heating chamber has a variable speed drive unit that drives either the low-speed rotation of the turntable or the high-speed rotation of the stirring blade. The first one drives the stirring blade through the through hole in the bottom of the
A waterproof plate is provided above the bearing A for the first drive shaft, and is made of high viscosity silicone at the joint between the waterproof plate and the first drive shaft. A filling member is provided in which an adhesive is poured and fixed.

Operation With the above-described configuration, when the turntable is used, the heat treatment can be performed while rotating the object to be heated itself at a low speed of about 5 to 6 rpm. When using a stirring vessel, use the stirring vessel in a stationary state, and set the stirring blade at 2G, for example.
By rotating at high speed before and after Orpm and combining stirring and high-frequency heating of food ingredients, cooking with less uneven heating can be performed.

Furthermore, a waterproof plate is provided along with a filling member around the outer periphery of the first drive shaft to prevent liquid that falls from the through hole on the bottom of the heating chamber from entering the sliding part of bearing A. It can withstand long-term use without the risk of locking.

Furthermore, since a highly viscous silicone adhesive is used as the filling member, it is easy to perform the adhesion work so that the filling member does not flow into the sliding portion.

Example An embodiment of the present invention will be described below with reference to the drawings.

The configuration of the embodiment is as shown in FIGS. 1 to 5.

In this embodiment, an example is shown in which a bread ingredient 13 is used as a food ingredient, a bread container @ 12 into which bread ingredients are placed is used as a stirring container, and a kneading blade 14 is used as a stirring blade to knead the bread ingredients put into the bread container.

In the figure, l is a heating chamber provided within the high-frequency heating device. 2 is a high frequency oscillator that supplies high frequency energy to the heating chamber 1 via a waveguide 3.

Numeral 4 is an upper heater, 5 is a lower heater for heating cakes, breads, etc. in the oven, and 6 is a plate holder that supports a square plate 7 (FIG. 5) used during oven cooking.

8 is a door for opening and closing the front entrance of the heating chamber 1, and 9 is an operation panel for controlling heating. 10 is an outer box, and 11 is a leg attached to the lower surface of the outer box 10. Process 2 is a bread container in which bread raw materials I3 consisting of flour, yeast, water, etc. are combined and baked by heating with a heater.

Reference numeral 14 denotes a kneading blade rotatably provided at the lower part of the bread container 12. 15 is a rotation axis of the kneading blade 14.

In FIG. 1, reference numeral 16 denotes a variable speed drive unit, which includes a table motor 22 that rotates a turntable 19 on which an object to be heated 18 is placed at a low speed of 5 to 6 rpm, and a table motor 22 that rotates a kneading blade 14 at a speed of 200 rpm when baking bread using the bread container 12. The driving source is a kneading motor 23 that rotates at high speed in the front and back. 17 is the first drive shaft - kneading motor 23
This is for transmitting the rotational force of the kneading blade 14 to the rotating shaft 15 of the kneading blade 14 via the small pulley 24, the belt 25, and the large pulley 26. In addition, the 11th! The moving shaft 17 is made of metal. 2F is a 21st moving shaft, which transfers the rotational force of the table motor 22 to the rotational connection shaft 21 of the turntable 20 that rotatably supports the turntable 19, as shown in FIG.
It is intended to communicate to people.

21st i! The moving shaft 27 is made of a dielectric material that is transparent to high frequencies. 28 is the bearing A for the 111i moving shaft 1f.
It is. A bearing B 29 for the rotating shaft 15 is made of sintered metal impregnated with lubricating oil. The second drive shaft 27 passes through a hollow portion of the first drive shaft 17.

Furthermore, the 111th! The moving shaft 17 drives the kneading blades 14 through the through hole in the bottom of the heating chamber 1, and the liquid that falls from the through hole as shown in the path 49 indicated by the dotted line arrow is caused by the movement of the bearing A28. The first step is to avoid joining the club.
1! It is formed so as to surround the outer periphery of the moving shaft 1f, and
A waterproof plate 50 extending obliquely downward is provided above the bearing A28. Further, the joint between the waterproof plate 50 and the first drive shaft 17 is filled with an adhesive filling member 4 made of high viscosity silicone.
1 is poured and fixed so as to connect the upper surface of the waterproof plate 50 and the outer periphery of the first quick-acting shaft 17. 31 is a motor mounting base for mounting the table motor 22 and the kneading motor 23. Reference numeral 32 denotes an intake hole for taking in outside air to cool electrical components. 33 is a retaining ring for fixing the large pulley 26 to the first drive shaft 17.

34 is a hollow disc that receives the thrust load of the first egg motion shaft 17. Reference numeral 35 denotes a driven piece, which is attached by a rivet 37 or the like to the lower part of a support fitting 36 fixed to the rotating shaft 15 to prevent the rotating shaft 15 from being dislodged upward.
Ill! It fits into the upper part of the moving shaft 17 and constitutes a dog clutch that engages with the upper part of the moving shaft 17. Reference numeral 38 denotes an oil seal made of silicone rubber or the like to prevent the bread ingredients 13, particularly the liquid, contained in the bread container 12 from spilling. 39 is a low friction washer A made of fluororesin etc.
This is to prevent mechanical impact on the oil seal 38 and maintain the liquid sealing effect for a long period of time. 40
is a retaining ring that prevents the oil seal 38 and washer A39 from coming off. 42 is a support stand that holds the bread container 12 on the bottom of the heating chamber 1. 43 is a retaining ring that fixes the support stand 42 and the bread container 12. This is a rivet.Kneading blade 1
The bearing B29 for the rotating shaft 15 of No. 4 is a bearing holder 59.
This bearing holder 59 is press-fitted into the support base 42, but is formed integrally with the support base 42. Reference numeral 44 denotes a fixture for removably fixing the support base 42 to the bottom of the heating chamber 1. As shown in FIG. It is something. 5
Reference numeral 1 denotes a hook formed on the fixture 44, which is attached to the support base 4.
The hook engages with the leg portion 42a of No. 2. Reference numeral 53 denotes a small hole through which a set screw 54 is inserted, which brings the periphery of the fixture 44 into close contact with the bottom surface of the heating chamber 1. Reference numeral 45 denotes a buffer member made of a dielectric material, and the fixture 44 is hooked to the lower part of the part 51 in order to prevent vibration noise caused by impact between the bottom surface of the heating chamber 1 and the support base 42 when the kneading blades 14 rotate. belongs to. This buffer member 45 is attached to a column 64 provided on the support base 42 with a screw 65.
The buffer member support 66 is fixed to the lowest part of the support base 42. Reference numeral 46 denotes a cavity wall surface for forming a choke cavity 47 for reducing high frequency waves that are about to leak to the outside of the heating chamber 1 through the outer periphery of the first drive shaft 17, and is made of a metal body such as aluminum die-casting. It is something. Chalk Sky I! 47 is the first drive shaft 1
A so-called radial line is formed in which the dimension in the direction perpendicular to the first drive shaft I7 is larger than in the axial direction of the drive shaft I7. Note that the radio waves travel from the entrance 48 of the choke cavity 47 toward the cylindrical cavity wall 46, are reflected by the cavity wall 46, and return to the entrance 48. The length of the radio wave propagation path within this choke cavity 47 is approximately λ/4.

Next, the operation of this embodiment having the above configuration will be explained.

In the case of bread baking using the bread container 12, the bread container 12 is installed in the heating chamber 1 as in a home bakery, as shown in FIG. Put the bread raw material 13 into the bread container 12, rotate the kneading blade 14 at around 200 rpm by the variable speed drive unit 16 to knead the bread raw material 13, and then stop.
Heating by the lower heaters 4, 5 and high frequency energy may be applied as appropriate, and the dough can be baked through processes such as fermentation and degassing by rotating the kneading blades 14 for several seconds. In this case, the bread has the cross-sectional shape of the bread container 12 and becomes a so-called mountain-shaped bread with a raised upper part. When making bread of other shapes such as rolls, knead and ferment in the bread container 12, then remove the bread container 12 from the heating chamber 1 and mix the bread ingredients 13 according to the type of bread intended. The dough can be divided, rolled, placed on a square plate 7 in the same way as an electric oven or microwave oven as shown in FIG. 5, and subjected to the process from shaping and fermentation to baking.

When using the turntable 19, as shown in FIG. The turntable 19 is installed in
Rotate at rpm. High frequency energy supplied from the high frequency oscillator 2 into the heating chamber 1 or the upper and lower heaters
4 and 5, the object to be heated 18 can be heated and cooked. A waterproof plate 50 fixed with a filling member 41 is provided on the outer periphery of the first drive shaft 17, and a heating chamber 1 is provided in the sliding portion of the bearing A28.
Since the dripping liquid is prevented from entering through the through hole, there is no risk of the first drive shaft 17 being locked due to seizing of the liquid, and it can withstand long-term use. Further, by using a high viscosity silicone adhesive as the filling member 41, it is easy to perform the adhesive work so that the filling member 41 itself does not flow into the moving parts. Furthermore, since the filling member 41 is poured into the upper surface of the waterproof plate 50 and the outer periphery of the first drive shaft 17, that is, on the opposite side from the bearing A28, it does not flow down to the bottom and reach the sliding part of the bearing A28.

In addition, in this embodiment, upper and lower heaters 4 and 5 are used, but by omitting the heaters and using a combination of stirring operation and high-frequency heating, it is possible to cook boiled eggs, jam, white sauce, corn potage soup, beef stew, It is possible to cook microwaveable cakes and the like with less uneven heating.

Effects of the Invention According to the present invention, the variable-speed drive unit selectively uses the high-speed rotation of the stirring blade or the low-speed rotation of the turntable during high-frequency heating, so that appropriate cooking operations can be performed depending on the purpose. can do. In addition, a fixing plate fixed with a filling member provided on the outer periphery of the first drive shaft
I! Prevents the sliding parts of the moving shaft and bearing A from locking,
You can enjoy cooking with less uneven heating using a stirring container over a long period of time.

Furthermore, it can be expanded to a variety of functions such as microwave ovens, electric ovens, and home bakeries, making it economical and
It is also advantageous in terms of space saving, and the effects of implementing it are significant.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of essential parts of a high-frequency heating device showing an embodiment of the present invention, Fig. 2 is a perspective view of the same fixture, and Fig. 3 is a sectional view of the high-frequency heating device (for home bakery use). FIG. 4 is a sectional view of the same (for microwave oven), and FIG. 5 is a sectional view of the same (for electric oven). 1... Heating chamber, 2... High frequency oscillator,
12... Stirring container (bread container), 13... Food raw material (bread raw material), 14... Stirring blade (kneading blade), 16... Variable speed drive section, 17... First drive Shaft, 18... Heated object, 19... Turntable, 28... Bearing A. 41...Filling member, 50...Waterproof board.

Claims (1)

[Claims] 1. A high frequency oscillator (2) is used as a heating source, and a heated object (18
), a turntable (19) on which a food ingredient (13) is rotatably placed, a stirring vessel (12) for cooking food ingredients (13) by a combination of stirring operation and high-frequency heating, and this stirring vessel (12). a stirring blade (14) rotatably provided inside the heating chamber; a variable speed drive unit (16) that drives either low-speed rotation of the turntable (19) or high-speed rotation of the stirring blade (14); and a heating chamber. The first drive shaft (17) drives the stirring blade (14) through the through hole in the bottom of (1).
), a waterproof plate (50) extending around the outer periphery of the first drive shaft (17) is provided above the bearing A (28) for the first drive shaft (17), and the waterproof plate (50)
A filling member (
41) A high-frequency heating device characterized by being provided with. 2. A high frequency heating device in which the filling member (41) according to claim 1 is an adhesive made of high viscosity silicone. 3. The filling member (41) according to claim 1 is attached to a waterproof plate (50
) and the outer periphery of the first drive shaft (17) by pouring and fixing the top surface of the first drive shaft (17).